Our experience with Devere was very split -- some aspects were excellent and some were terrible. To begin, we wanted something that not many providers will do, which is blown-cellulose in our interior walls and ceilings for the purposes of soundproofing. It is something that we knew well would only help somewhat with our interior noise problems, but we wanted it anyway. We were relieved to find Devere after really struggling to find a provider. And the pricing wasn't horrific, exactly, because there aren't a lot of good alternatives out there. But there is quite a lot of overhead built in. Nonetheless, Devere has a very turn-key operation, and we appreciate that. We scheduled them and moved their date twice because of business trips that popped up, etc. They were very friendly and accommodating about that with us. On the day of the work, they showed up on time, came in with a big crew, and went through the work with impressive speed and coordination. EXCEPT that they immediately made a very serious error on the 2nd hole that they drilled: Having noted where our main electric line was located, they drilled beside it and promptly tore through our upstairs neighbor's main power line. (We are a row house broken into 2 condos.) This was a VERY BAD mistake, but it was a mistake and mistakes happen -- especially in construction. We weren't mad that it happened -- we were mostly concerned with the response to it. Right away, the crew called me in to see what had happened. That was good, since our neighbors also were pounding on the door at the same time to tell us all of the power in their condo had just gone out. But when I asked the crew whether they had an electrician that they could call, they just shrugged and didn't know what to do. So I started calling electricians at the same time that my husband was also trying to get ahold of the main office at Devere. Because it was a Saturday, Devere's office line went to a call center, and that person relayed the message to an on-call manager with Devere. We had to do that twice, because we didn't hear anything back for 3 HOURS. Which was really not good. Not only did our neighbors not sign up for this mess, but all of their heat is electric, in addition to the refrigerator, obviously, and everything else. So they were completely disrupted by this. Our only saving grace was that they were about to head out of town for the weekend, so that lessened how much it actively impacted them. Once we got in contact with the on-call manager, they said they would hire an electrician and send that person out. Here's where the problem primarily becomes with the people that they hired to fix the problem. The electrician was later than he said he would be -- it was now late afternoon -- and once he arrived, he simply said "oh god, this isn't good" and "I'll have to go to the store tomorrow to get some things and work on this then." I don't know why he couldn't go to the store then and work on it right away, but we weren't given any say in the matter. It wasn't until the next day, Sunday, when Devere sent out a project manager to our house to look at the damage. He was great and attentive and assured us that he would take care of the situation. But the electricians were sort of doing their own thing on their own schedule. Our neighbor's power got fixed by the end of that day, but the electricians had to cut big holes in the walls of our condo and our neighbor's condo. Then there was a dispute between the electrician and Devere over who was responsible for the drywall repair -- believe it or not, they both wanted to do it. The electrician had a drywall guy who came that night, but he did a really terrible job, including damaging one of our baseboards and another wall, etc. I complained to Devere about the quality of the work, and they promised to have the drywall guy return on Monday evening to fix his work. I wanted Devere's painter to come that same night, because by this point, our neighbors had had their home ripped apart for 3 days already. Monday night, Devere's painter showed up but the drywall guy did not. So Devere's painter did some of the drywall repair but not all of it, because he wasn't getting paid for it / wasn't supposed to have to do it / whatever. Tuesday night, I checked on how the paint was looking in my neighbor's condo after drying. Unfortunately, the painter had gotten some on the baseboard and, as Devere warned us, you could tell that an area of the wall had been repainted that didn't perfectly match the rest of the wall. Devere had told us upfront that that could happen and they would repaint our neighbor's full wall if they wanted them to. But our neighbors just were afraid that things would get worse rather than better if we kept going, so they decided to just live with an imperfect wall. As for us, we just never insisted on our baseboards being repaired, and we retouched up our own trim ourselves. There is a point at which you just cut your losses. In terms of the insulation work, I appreciated that they were so efficient about that and that they did a fairly decent job of cleaning up after themselves when they left. But there were some things that were not communicated to us -- like the fact that they use styrofoam plugs for the holes instead of drywall plugs. The styrofoam plugs are really difficult to hide well afterwards. We had intended to spackle and paint ourselves afterwards and spent literally 30-40 hours just trying to get the styrofoam plugs to sit properly (some were too far in and some were too far out) and then seal them and compound over them in a way that actually hide the styrofoam texture and the edges of the holes, and then sanding and sanding and sanding. We finally hired professionals to do painting after we had resigned ourselves to always being able to see the outlines of holes in the walls of our 1-year old home. But the painter we have working on the house now thinks he can hide them better, so he's repairing all of them all over again. All 200+ holes. But both he and other contractors that we've had work on the house have warned us that these styofoam plugs will crack in the coming years and look terrible. No one at Devere told us this. And they left us with some really wonky holes to deal with. My takeaway is this: They're very good at what they do, and when they screwed up, they did try genuinely and with concern to fix it. But for how serious of a mistake this was, they showed up late and with an unreliable electrician / drywall repair person who then became our problem and our neighbor's in addition to theirs. I expect that Devere lost all of their profit on our project and overpaid the electrician, but their desire to fix their mistakes didn't match with their capacity to do so. Our neighbors were without power for 2 days, with a hole in their wall for 3, and ended up with an imperfect wall in the end. We didn't lose power, but we certainly incurred wall damage. And more than that, we lost 4-5 days just trying to schedule and reschedule electricians and drywall guys and painters and generally crisis control. Still, I would hire Devere again *if* I was in need of exactly their core service and nothing else, knowing in advance about the styrofoam plugs... AND I was highly confident that I could watch to ensure no mistakes were made... AND they had the cheapest price by far available. :-P They do their core work well. There must be a way to cover the styrofoam properly. But you don't want to end up in an atypical situation with them.